Buy a plan
Pick a destination, data allowance and validity period.

Build the Turkey route around the airport code, final address and booked pickup before comparing eSIMs by data, validity, territory, device support, hotspot terms and checkout total. Separate IST from SAW, Antalya city from a coastal resort, İzmir from the onward Aegean town, and Kayseri from Nevşehir for Cappadocia. Two shapes of trip need different plans: one or two weeks at a coastal resort with hotel Wi-Fi, or a family visit of several weeks with drives between towns. A holiday concentrates active use into a few days, while a family visit turns the longer validity window, and whether the selected plan supports a top-up, into the deciding questions. Size each shape separately: for the week by the sea count the arrival, the transfer and the excursion days, if the evenings run on hotel Wi-Fi; for the family visit count the days spent between towns and the stretches where someone else's Wi-Fi is not available to you.
A Turkey journey often joins an airport choice to several operator handoffs: metro or coach in Istanbul, a resort transfer from Antalya, a local-to-coast connection from İzmir, or a prearranged pickup into Cappadocia. Data helps check live departures and contact a driver where service exists, but it cannot correct the wrong airport or replace an offline address. Travellers visiting relatives move differently from package guests: several weeks, several towns, long road stages and time in homes whose Wi-Fi cannot be checked in advance. A family visit does not necessarily end at the arrival airport either: a domestic flight, an intercity coach or a long drive to a smaller town can follow, and that last stage wants the address, the contact and the map saved beforehand. Reception differs between a city centre, a built-up coastal strip, a country road and a mountain village, and depends on the place, the terrain, the device and the selected plan. Some international travel-eSIM provider websites, apps or top-up paths may be restricted on Turkish networks; this is not a ban on all eSIM technology.
For this trip
Install it before you fly, but read the plan before you switch it on. Installing early is always safe and worth doing: it puts the profile, the order email and the manual activation details on the phone while you still have a connection you know, which matters because provider sites and apps can be hard to reach once you land. Switching on is the part with a cost — if validity starts at activation rather than at first use, turning it on the night before can spend a travel day before the trip begins. A separate question decides whether you want a local line instead: Turkey operates a handset registration system for phones used with a Turkish local SIM beyond a limited period, which is a different arrangement from a travel eSIM roaming on a partner network.
Horizon sells Turkey eSIMs. The advice to buy and install before departure applies whichever provider you choose, including a competitor.
Istanbul Airport sits on the European side and Sabiha Gokcen on the Asian side, with the whole city between them. Save the correct airport code and the hotel entrance before you board, not after.
Hotel Wi-Fi carries most of a beach week, and the mobile allowance only really works on excursion days. A smaller plan with room to top up often fits better than a large one bought in advance.
A dawn balloon field and a village address reached by a dirt turning both want offline maps. For a long visit, the validity window and the top-up path matter more than the size printed on the plan.
Refund policy
Get a full refund within 7 days if no data is used, even after installation.
Activation window
Check the package details for the first-use deadline and validity rules.
Secure checkout
Cards, Apple Pay & Google Pay — encrypted by Paysera.
Customer support
Contact support before or during your trip if you need help.
An eSIM is not a card you slot in but a profile you set up on the device, which is why the work sits before the trip rather than at a counter on arrival. Before travelling from the UK or another departure country, complete the selected provider's required purchase, download, installation and setup on reliable Wi-Fi while its site and app are accessible. First confirm that the unlocked phone supports eSIM and read exactly what starts validity, because installing, activating or first connecting can follow different product rules; do not start the allowance early. Keep the QR and manual code off the device, plus support details, tickets, pickups and addresses offline. In Turkey, select the profile for mobile data and apply only the roaming, APN or activation steps that its instructions require. If the home number has to stay reachable for family and work, leave it active on the existing SIM and use the eSIM only as the data line, where the device can manage two lines at once; read the home tariff's own terms for calls and texts made abroad. Allowances written for travel inside the EU do not extend to Turkey, so the home line follows whatever your own contract states for countries outside that area, background data included.
Pick a destination, data allowance and validity period.
Scan the QR or auto-install in the app — no physical SIM.
Data activates on first connection at your destination.
Pick the profile closest to your trip. The estimate assumes normal use — maps, messaging, photos, a short call home.
As a rule of thumb, a 3–4 day city break runs on about 1–3 GB, a one-week trip on 3–5 GB, a two-week multi-country tour on 8–12 GB, and working on the road takes about 1 GB a day, so 15 GB or more for two weeks.
In total, a 5 GB data allowance covers roughly 1,700 shared photos, 83 hours of social media and browsing, 15 hours of video calls, 63 hours of music streaming, or about 1000 hours of maps and navigation. Messaging apps barely use data.
Istanbul · City guide
Start with the airport code on the boarding pass: Istanbul Airport (IST) and Sabiha Gökçen (SAW) are on different sides of a very large city. From IST, current official choices include the M11 metro, Havaist or other permitted ground transport; from SAW, choices include the M4 metro, airport coaches, municipal buses or a booked vehicle. Select the route by the actual hotel address and final operating interchange, not by the word Istanbul. Before leaving arrivals, save the current stop or pickup zone, payment instructions, every interchange and the entrance pin. On a family visit the address is often a neighbourhood well outside the centre, sometimes on the other side of the Bosphorus, so allow generously for travel time and changes and keep the address stored in Turkish spelling as well, so a driver can read it. If a domestic flight continues the journey, treat it as a separate stage with its own booking, check-in and baggage rules, and confirm whether it departs from the same airport you landed at.
Istanbul eSIM — set up before you fly →Antalya · City guide
Antalya Airport serves both the city and resorts spread far along the coast. Official ground choices include municipal bus or tram, Havaş, taxi and rental car, but the useful option depends on the exact hotel in Antalya, Kemer, Belek, Side, Alanya or another town and may still require a separate hotel shuttle or walk. Confirm the operating terminal, company, departure point and whether the booked transfer is shared or private. Save the accommodation entrance, reservation reference, driver contact, return pickup place and pickup time before the beach or excursion day. On a package holiday most of the day runs on hotel Wi-Fi, and mobile data matters mainly on excursion days: the road into the mountains, a beach away from the town or a boat trip, where reception can vary with the place, the terrain and the selected plan. The arrival day asks the most of a phone: finding the transfer, confirming the room, telling people at home — all before the hotel Wi-Fi is even set up. If the return transfer is confirmed only the evening before, that evening needs either a connection or the agency number written down offline.
Antalya eSIM — set up before you fly →Izmir · City guide
At İzmir Adnan Menderes Airport (ADB), official transport options include İZBAN rail, ESHOT buses, Havaş, taxi and rental car. First decide whether the destination is an İzmir neighbourhood or an onward coastal place such as Selçuk, Çeşme or Alaçatı; an airport-to-centre route is not the complete coast transfer. Check the current service, correct terminal path and interchange against the full address. Store the local ticket method, onward coach or rail booking, station exit, lodging entrance and last practical return to ADB offline. Day trips inland and drives to relatives in smaller towns leave the centre behind quickly, so download maps, timetables and the destination address first; what the phone finds along those stages depends on the place, the terrain, the device and the selected plan. A hire car moves the need onto the drive itself: navigation, fuel stops and finding the entrance at the far end. Download the route offline beforehand and write the destination phone number on paper as well.
Izmir eSIM — set up before you fly →Cappadocia · City guide
Cappadocia is a region, not an airport or one terminal. Kayseri Erkilet (ASR) and Nevşehir Kapadokya (NAV) can both serve the trip; NAV is generally closer to the main Cappadocia towns, but the correct choice is the flight and confirmed transfer to the booked address in Göreme, Ürgüp, Uçhisar or another town. Airport shuttles may be reservation-linked rather than a walk-up city service. Confirm the airport code, flight number, passenger name, meeting sign, hotel entrance and return pickup. For a dawn tour, save the operator's latest pickup message and a missed-contact fallback before sleeping. Between valleys, rock formations and field tracks, reception is not what it is in the centre of Göreme or Ürgüp, and it depends on the place, the terrain, the device and the selected plan. If a balloon flight is moved or called off because of the weather, the message may reach you very early in the morning, so keep the operator's number somewhere other than the booking app as well.
Cappadocia eSIM — set up before you fly →Why Horizon
Estimate data for airport changes, current transport, driver messages, hotel check-in, tour confirmations and returns. Compare the written plan for calls, SMS, hotspot use, supported devices, validity trigger, top-up route and territory, and keep a Wi-Fi or support fallback if provider access becomes unavailable locally. A useful comparison sits on the written terms rather than the headline: allowance per travel day, the validity window and what starts it, the territory named in the listing, whether hotspot sharing is permitted on that plan and device, eSIM support and carrier unlocking, and the total at checkout. A Turkey-only listing does not establish service in Greece, Bulgaria, Georgia, Armenia, Azerbaijan, Iran, Iraq or Syria, on a ferry or at sea, or in Cyprus; each required country or area must be stated explicitly. Arriving by car adds one more check, because every country crossed on the way needs its own listed territory or its own plan. Two offers only become comparable once you convert them to the same trip length: a larger allowance inside a shorter validity window does not suit a longer stay, and an offer written for a different territory is not a comparison at all.
Plan for
Turkey
Compare the listed data allowances and validity periods for your destination.
Install over reliable Wi-Fi before departure and follow the plan's activation instructions.
Review the current price, data, validity, coverage and fair-use terms before checkout.
When the selected plan supports reuse or top-ups, My eSIMs shows the eligible options for the installed profile.
We'll alert you as you approach your limit. If the plan supports a top-up, My eSIMs shows the eligible options.
Choose country, regional or global coverage and check every destination in the plan details.
Map the live-data moments first: airport changes, transport checks, driver contact, hotel entry, tour pickup and return. Compare data, validity trigger, written territory, supported devices, hotspot, calls, SMS, top-up route, support access and checkout total against those needs. The trip shape decides the weighting: a one- or two-week coastal holiday leans on the data amount for a handful of active days, while a family visit of several weeks leans on the validity window and on how many separate places the route touches. Because some provider access paths may be unavailable after entry, finish the required purchase and setup beforehand and retain QR, manual code, addresses and support instructions offline.
Do not describe the situation as a ban on all eSIM technology. The narrower concern is that some international travel-eSIM provider websites, apps or top-up paths may be restricted when accessed through networks in Turkey. A profile bought and correctly prepared before entry may follow different operating rules from its storefront or app, so read the selected provider's current Turkey notice. Complete every required step while access is available and preserve support and recovery details outside the app.
Follow the exact product instructions before entering Turkey. Confirm that the unlocked device is compatible, complete the required purchase, download and setup on reliable Wi-Fi, and save both QR and manual details somewhere else. Then identify the validity trigger before activating anything: some products count from installation, activation or a specified first connection, so a universal instruction to activate early is unsafe. Enable the line, mobile-data selection, roaming or APN only at the stage the provider specifies. For a stay of several weeks, check before the window closes whether the selected plan can be extended or topped up, because that depends on the product rather than on the eSIM itself.
Use the code on the actual flight. IST and SAW are separate airports on different sides of Istanbul, so never substitute one route for the other. At IST, compare the current M11, Havaist and permitted alternatives against the hotel address; at SAW, compare M4, airport coach, municipal bus or a booked vehicle. Confirm the final interchange, service hours, fare or payment method and luggage route on official pages, then store the pickup area and full entrance address offline.
Match the booked flight, not the region name, to Kayseri Erkilet (ASR) or Nevşehir Kapadokya (NAV). NAV is generally closer to the main Cappadocia towns, but schedule, fare and a confirmed transfer to the exact Göreme, Ürgüp, Uçhisar or other address determine the workable route. Reserve a shuttle when required and verify that it meets that airport and flight. Store the sign, driver contact, hotel entrance, dawn-tour pickup and return time offline.
Rely only on the territories written in the selected plan. A Turkey-only listing gives no basis for service in Greece, Bulgaria, Georgia, Armenia, Azerbaijan, Iran, Iraq or Syria, even where a road or rail journey crosses the border. It also does not establish reception on a ferry, at sea or in Cyprus; never infer Cyprus from Turkey. Check every required country or area explicitly before purchase and keep tickets, border information, meeting point and final address offline.
For a one-week Turkey trip, budget about 3–5 GB for maps and messages, 5–10 GB for typical use, or 15 GB and up for video, hotspotting or remote work.
One to two weeks in Turkey usually fits 8–10 GB, or 3–5 GB for maps and messaging alone. Turkey sits outside EU roaming, so sort the data before you land.
Istanbul's skyline and the turquoise coast in one trip — here's how to plan mobile data for maps, ferries and bookings on a Turkish coast summer.